vlib/v/checker/tests/selector_generic_or_block_err.vv:7:24: error: wrong return type `string` in the `or {}` block, expected `int`
    5 | 
    6 | fn (f Foo[T]) str() string {
    7 |     value := f.value or { 'this should be a checker error' }
      |                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8 |     return '${value}'
    9 | }
